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likoan [24]
3 years ago
7

HALP ME PLEASE 2. What two substances make the backbone of the DNA molecule? I will mark brainliest to first correct answer with

in 20 minutes, since my quiz is timed.
Biology
1 answer:
Viefleur [7K]3 years ago
8 0
Deoxyribose is the substances along with sugar and phosphates . The rungs of the ladder are made up of 5 nitrogenous bases adenine, thymine, cytosine, and guanine. 
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